Diana Shvydka, Ph.D - The University of Toledo

Curriculum Vitae 

Dr. Diana Shvydka 

Department of Radiation Oncology, University of Toledo Health Science Campus, 

3000 Arlington Ave., MS#1151, Toledo OH 43614 

phone: (419)-383-5328 (office) 

e-mail: Diana.Shvydka@utoledo.edu 

RESEARCH INTERESTS 

General Interests: Medical Physics, Device Physics 

Specific interests: Thin-film radiation detectors; Materials and device characterization, 

fabrication, and simulation; Radiation transport Monte Carlo 

modeling; Comsol modeling 

EMPLOYMENT RECORD 

2009 – present Assistant Professor, Department of Radiation Oncology, University 

of Toledo Health Science Campus, Toledo OH; 

2006 – 2009 Postdoctoral Research Associate, Department of Radiation 

Oncology, University of Toledo Health Science Campus, Toledo OH; 

2004 – 2006 Research Assistant Professor, Department of Physics and Astronomy, 

University of Toledo, Toledo OH; 

2002 – 2004 Postdoctoral Research Associate, Department of Physics and 

Astronomy, University of Toledo, Toledo OH; 

1999 – 2002 Intern at First Solar, LLC, Perrysburg OH; 

1996 – 2002 Ph.D. Graduate Student, Department of Physics and Astronomy, 

University of Toledo, Toledo OH; 

1996 – 1997 Software Engineer, Toledo Transducers, Inc., Holland OH; 

1992 – 1995 Research Engineer, Kiev State University, Kiev, Ukraine; 

1992 – 1993 Physics Teacher, High School #10, Kiev, Ukraine. 

PUBLICATIONS 

Over 60 publications in refereed journals and conference proceedings; the list of 

publications is attached. 

EDUCATION 

MS (Physics) 1992, Kiev State University, Kiev, Ukraine 

Ph.D. in Physics 2002, University of Toledo, Toledo, OH 

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TEACHING EXPERIENCE 

Co-teaching core courses within the graduate Medical Physics program: MPHY- 

612/812 “Radiation Dosimetry I and II”, MPHY-616/816 “Radiation Biology”, 

MPHY-618/818 “Physics of Radiation Therapy” 

Taught non-calculus-based introductory “General Physics” course PHYS-2070 for 

undergraduate students; University of Toledo. Since all of the students had nonphysics 

majors, the main goal of the course was to present the concepts in a simple 

form, appreciated by the audience. 

Developed and taught course PHYS-4510/5510 “Physics of Condensed Matter”; 

University of Toledo. The main goal of the course was to give a conceptual 

overview of the most important physical phenomena and models in the modern 

condensed matter science. 

Supervise graduate students of Medical physics group, University of Toledo 

Serve on committees of graduate students of Medical physics group, University of 

Toledo 

Supervised two REU students, research resulted in publications; University of 

Toledo. 

Partially supervised graduate students of PV group, University of Toledo. 

Taught instructional labs as Graduate teaching assistant, University of Toledo. 

Taught physics (7 through 9 grade), High School #10, Kiev, Ukraine. 

RESEARCH SUMMARY 

THIN FILM CDTE RADIATION DETECTORS FOR MEDICAL APPLICATIONS 

Proposed a concept and design of new generation radiation detector for radiation 

oncology applications, utilizing thin-film CdTe. Established superior radiation hardness of 

these devices and developed their theoretical models using two most popular high-energy 

radiation transport simulation software packages, BEAMnrc and MCNP5. Provisional 

patent for the design is being filed. 

THERMO-BRACHYRATHERAPY IMPLANT SEED 

Developed COMSOL Multiphysics model to study thermal distributions for newly 

designed thermo-brachyratherapy implant for concurrent administration of radiation and 

hyperthermia treatments of cancer. The ferromagnetic core (Cu-Ni or of each implant 

produces heat when subjected to alternating electro-magnetic (EM) field and effectively 

shuts off after reaching its Curie temperature thus realizing the temperature selfregulation. 

Modeling of a problem where multiple seeds are arranged in a pattern typical 

of a brachytherapy treatment allows finding a range of optimal parameters for seed internal 

geometry and external magnetic field. Determined via Monte Carlo modeling that 

combining thermal and radiation properties does not significantly alter the dosimetric 

properties of the implant loaded with radioactive materials such as iodine ( 125 I) or 

palladium ( 103 Pd). 

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PHYSICS OF THIN FILMS/DEVICES 

Thin film device fabrication 

Fabricated compound semiconductor thin films and solar cell devices using rf-sputtering 

and pulsed laser deposition techniques. Samples of intentionally varied properties were 

used for electrical and optical studies aimed at optimization of complete PV device 

performance. 

AFM/STM studies 

Established the phenomenon of temporal chaos in micro-scale current-voltage 

characteristics of thin-film devices: AFM current exhibits stochastic behavior in addition to 

the spot-to-spot variation. This research illuminates the microscopic physics of electron 

transport through thin-film and nano-particle barriers. 

Shunting and dielectric breakdown 

This ongoing effort is aimed at understanding the nature of dielectric breakdown in the 

modern nano-scale devices (MOS transistors) and relating this phenomenon to the omnipresent 

shunting effects in thin-film photovoltaics. This resulted in two recent publications 

in PRB and APL, and clearly has potential for more significant papers. 

Piezo-photovoltaic coupling 

Uncovered the phenomenon of piezo-photovoltaic coupling and related to the morphology 

of the CdS film. 

Nano-dipole photovoltaics 

Developed new thin-film photovoltaic device principle, where the electric field is created 

by a set of nanoparticles imbedded into a light-absorbing matrix. Utility patent application 

has been filed. 

Corrosion resistant protective tunneling layer 

Recently filed a utility patent for a new principle of corrosion resistant electrode based on 

the physical phenomenon of quantum tunneling rather than on the electrode chemistry. 

Optical properties 

Applied transmission-reflection and photoluminescence (PL) measurements to study the 

near-band edge properties of CdSxTe1-x ternary system for films of different compositions 

at room temperature and, at 10K; identified features related to defects and compositional 

disorder. Systematically applied a below-band-gap PL excitation technique to elucidate the 

effects of different steps in solar cell production. 

Non-local photovoltaic response 

Found the effect of non-local photovoltaic response to a scanning laser beam in CdTe/CdS 

solar cells. The degree of non-locality depends on the device lateral resistance and laser 

beam power, and can be as long as 1 meter in finished devices. Associated with the nonlocal 

response are also features in PL mapping where different excitation powers lead to 

different map topologies. 

Bias-dependent photoluminescence 

Discovered the effect of external bias on PL intensity in thin-film CdTe PV (later verified 

for thin-film CIGS PV by other groups): PL suppression under reverse bias, increase with 

moderate forward bias and subsequent saturation is extremely sensitive to device 

degradation. The phenomenon is shown to result from the competition between the field- 

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induced separation of electrons and holes and their non-radiative recombination and can be 

used as a very sensitive indicator of device degradation. 

Low-light mesoscopic properties of thin-film solar cells 

Developed database approach to statistical analysis of nominally identical solar cells. 

Discovered a crossover light intensity, below which the relative fluctuations of the PV 

parameters diverge. Identified a mesoscopic nature of this effect (correlation length vs. cell 

diameter). This introduced a simple uniformity diagnostic technique. 

Device degradation and accelerated life testing 

For the first time observed that in a polycrystalline CdTe/CdS solar cell, illuminated with a 

laser beam of constant power, junction PL gradually decreased over time. Two 

independent mechanisms were short-time PL decrease due to local heating and more 

gradual change related to the material degradation (PL fatigue). This was attributed to 

defect creation by the light-generated electrons and holes. Simple analytical model that fits 

the data also provides basis for accelerated life testing using PL fatigue. 

Non-uniformity diagnostics 

Identified nano-scale nonuniformity as a major problem reducing device efficiency and 

stability. Numerically simulated system of random diodes describing effects of 

nonuniformity and successfully applied it to the thermography data, in collaboration with 

the Max-Plank Institute (Germany). Introduced several other mapping techniques such as 

PL, open-circuit voltage, and STM current, in particular, with an industry partner, First 

Solar, LLC (co-PI in the grant “Non-uniformity losses”). Within the National CdTe team, 

organized collaboration in the framework of the “Micro-nonuniformity” sub-team. 

Computer modeling 

For the first time applied computer modeling to simulate integral parameters of composite 

systems of many nano-particles possessing random diode characteristics. Commercial 

software PSpice was used to investigate effects of nonuniformities on cells and large-area 

integrated photovoltaic modules. This resulted in several important observations, such as 

disorder topology having almost no effect on the macroscopic characteristics, scaling 

dependencies, and formation of closed current loops. 

INDUSTRIAL RESEARCH 

At First Solar, LLC, designed and implemented a testing procedure for CdTe 

photovoltaic modules where optical absorption measurements were used to characterize 

CdTe/CdS alloy composition vs. probe position (composition mapping). Lead X-ray 

diffraction (XRD) measurement project and developed associated software aimed at 

studying microcrystalline structure of CdTe films. Developed the photoluminescence (PL) 

mapping technique to test the device uniformity. Developed bias-dependent PL techniques 

as a tool for characterizing the device stability at the earliest stage of degradation. 

Established the use of frequency-dependent capacitance techniques to determine the 

density of defect states in the device. 

SECOND ORDER PHASE TRANSITIONS 

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Studies in molecular physics of complex liquids, including light scattering, 

diffusion analyses, and spatial correlations in second order phase transitions. 

MISCELLANEOUS 

Database design and implementation, computer programming for scientific 

applications. 

RESEARCH SUPPORT 

Title: Joint initiative in a new type of nuclear radiation detector through faculty 

development between the departments of Radiation Oncology and Physics and Astronomy 

Funding period: 06/06/12 - 06/05/15 

Role: faculty served by the grant; PI: Feldmeier J.J.; co-PI: Anderson L. 

Agency/Mechanism: NRC, Faculty development award 

Title: Feasibility of a New Thermo-brachytherapy Seed for Concurrent Brachytherapy and 

Hyperthermia Treatments in Prostate Cancer 

Agency/Mechanism: Subaward, main funding: NIH - STTR Phase I with BEST Medical 

International, Inc. 

Funding period: 09/28/2011-09/27/2012 

Role: Co-I; PI: Parsai, E.I.; other Co-I’s: Feldmeier, J.J., Li, C., from BEST Medical, M. 

Subramanian 

Date submitted: 08/09/12, pending review 

PI: Parsai E.I.; co-Is: Shvydka D., et al. 

Agency/Mechanism: DOD PCRP, Idea Development Award 

Title: Development and Clinical Implementation of a New Thermo-brachytherapy Seed for 

Concurrent Radiation and Hyperthermia Treatments of Prostate Cancer 

LIST OF PUBLICATIONS 

Refereed Journals: 

1. Dosimetric and Thermal Properties of a Newly Developed Thermobrachytherapy Seed 

with Ferromagnetic Core for Treatment of Solid Tumors, 

B. Gautam, E. I. Parsai, Diana Shvydka, J.J. Feldmeier, M. Subramanian, 

Medical Physics 39, 2012, pp.1980-1990. 

2. Evaluation of a novel thermobrachytherapy seed for concurrent administration of 

brachytherapy and magnetically mediated hyperthermia in treatment of solid tumors 

E.I. Parsai, B. Gautam, and Diana Shvydka, 

Journal of Biomedical Phys Eng 1, 2011, pp. 5-16. 

3. Design and optimization of large area thin-film CdTe detector for radiation therapy 

imaging applications, 

E. I. Parsai, Diana Shvydka, J. Kang, 

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Medical Physics 37, 2010, pp. 3980-3994. 

4. Quantitative and analytical comparison of isodose distributions for shaped electron 

fields from ADAC Pinnacle treatment planning system and Monte Carlo simulations, 

E. I. Parsai, Diana Shvydka, J. Kang, P. Chan, D. Pearson, F. Ahmad, 

Applied Radiation and Isotopes 68, 2010, p. 2174-2180. 

5. Response to Letter to the Editor published in ARI 67 (2009) 206-207, 

E. Parsai, Diana Shvydka, 

Applied Radiation and Isotopes 68 2010, pp. 467-468. 

6. Theory of electronic transport in noncrystalline junctions, 

M. Nardone, V.G. Karpov, Diana Shvydka, and M. L. C Attygalle, 

Journal of Applied Physics 106, 2009, p. 074503. 

7. From Photovoltaics to Medical Imaging: Applications of Thin Film CdTe in X-ray 

Detection, 

J. Kang, E. I. Parsai, D. Albin, V. G. Karpov, and Diana Shvydka, 

Applied Physics Letters 93, 2008 pp. 223507-01-03. 

8. Surface and build-up region dose analysis for clinical radiotherapy photon beams, 

E. Ishmael Parsai, Diana Shvydka, David Pearson, M. Gopalakrishnan, and John J. 

Feldmeier, 

Applied Radiation and Isotopes 66, 2008, pp. 1438-1442. 

9. Nanodipole photovoltaics, 

Diana Shvydka and V.G. Karpov 

Applied Physics Letters 92, 2008, pp. 115314 - 115318. 

10. Radiation hardness studies of CdTe thin films for clinical high-energy photon beam 

detectors, 

Diana Shvydka, E. Parsai, J. Kang, 

Nuclear Instruments and Methods in Physics Research, A 586, 2008, pp. 169-173. 

11. Piezo-photovoltaic coupling in CdS-based thin-film photovoltaics, 

M. Mitra, J. Drayton, M. L. C. Cooray, V. G. Karpov, and Diana Shvydka 

Journal of Applied Physics 102, 2007, p.034505. 

12. Pyroelectric coupling in thin-film PV, 

V. G. Karpov and Diana Shvydka, 

Phys. Status Solidi (Rapid Research Letters) 1, 2007, p.132. 

13. Physics of ultrathin photovoltaics, 

V. G. Karpov, M.L.C. Cooray, and Diana Shvydka, 

Applied Physics Letters 89, 2006, p. 163518. 

14. Piezo-effect and physics of CdS based thin-film photovoltaics, 

Diana Shvydka, J. Drayton, A. D. Compaan, and V. G. Karpov, 

Applied Physics Letters 87, 2005, pp 123505-1-3. 

15. Power generation in random diode arrays, 

Diana Shvydka and V. G. Karpov, 

Physical Review B 71, 2005, pp. 115314-1-5. 

16. Back contact and reach-through diode effects in thin-film photovoltaics, 

Y. Roussillon, V. G. Karpov, Diana Shvydka, J. Drayton, and A. D. Compaan, 

Journal of Applied Physics 96, 2004, pp. 7283-7288. 

17. E 2 phase transition: thin film breakdown and Schottky barrier suppression, 

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V. G. Karpov, Diana Shvydka and Y. Roussillon, 

Physical Review B 70, 2004, pp. 155332-1-5. 

18. Reach-through band bending in semiconductor thin films, 

Y. Roussillon, D. M. Giolando, V. G. Karpov, Diana Shvydka, and A. D. Compaan, 

Applied Physics Letters 85, 2004, pp 3617-3619. 

19. Random diode arrays and mesoscale physics of large-area semiconductor devices, 

V. G. Karpov, A. D. Compaan, and Diana Shvydka, 

Physical Review B 69, 2004, pp.045325-1-12. 

20. Lock-in thermography and nonuniformity modeling of thin-film CdTe solar cells, 

Diana Shvydka, J.P. Rakotoniaina, and O. Breitenstein, 

Applied Physics Letters 84, 2004, pp.729-731. 

21. Blocking thin film nonuniformities: photovoltaicself-healing, 

Y. Roussillon, D. Giolando, Diana Shvydka, A. D. Compaan, and V. G. Karpov, 

Applied Physics Letters 84, 2004, pp.616-618. 

22. Admittance spectroscopy revisited: Single defect admittance and displacement current, 

V. G. Karpov, Diana Shvydka, U. Jayamaha and A. D. Compaan, 


23. Photoluminescence Fatigue and Related Degradation in Thin-Film Photovoltaics, 

Diana Shvydka, C. Verzella , V. G. Karpov and A. D. Compaan, 


24. Low Light Divergence In Photovoltaic Parameter Fluctuations, 

Diana Shvydka, V. G. Karpov and A. D. Compaan, 

Applied Physics Letters 82, 2003, pp. 2157-2159. 

25. Nonlocal response in CdTe photovoltaics, 

Diana Shvydka, A. D. Compaan and V. G. Karpov, 


26. Effects of nonuniformity in thin-film photovoltaics, 



27. Bias-dependent photoluminescence in CdTe photovoltaics, 



28. Optical properties of CdTe1-xSx (0 x 1): Experiment and modeling, 

K. Wei, Fred H. Pollak, J.L. Freeouf, Diana Shvydka and A.D. Compaan, 


29. The particularities of binary mixture component movement near the exfoliation critical 

point, 

L.A. Bulavin, A.D. Alekhin, D.B. Konvay (maiden name), D.I. Malyarenko, 

Condensed Matter Physics Journal, n. 9, 1996, pp. 11-16. 

Conference proceedings: 

1. Micro-Dosimetry Study of the Radiation Dose Enhancement at the Gold-Tissue 

Interface for Nanoparticle-Aided Radiation Therapy, 

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N. Paudel, D. Shvydka, E. Parsai, 

Medical Physics 39, 2012, p.3775. 

2. Comparison of the Radiation and Thermal Dose Distributions of a Novel Thermo- 

Brachytherapy Seed, 

G. Warrell, D. Shvydka, B. Gautam, E. Parsai, 


3. Practical Considerations for Maximizing Heat Production in Novel Thermo- 

Brachytherapy Seed Prototype, 

B. Gautam, D. Shvydka, E. Parsai, 


4. Quantitative Assessment of the Source Attenuation for the New CT Compatible 

Titanium Fletcher-Suit-Delclos (FSD) Gynecologic Applicator, 

N. Soni, B. Gautam, D. Shvydka, E. Parsai, 


5. Quantitative evaluation of the radiation dose enhancement at the gold-tumor interface 

when gold nanoparticles are used for radiation therapy, 

D. Shvydka, N. Paudel, E. Parsai, 

International Journal of Radiation Oncology, Biology, Physics 81, 2011. p. S150. 

6. Study of the effect of blood perfusion rate on thermal distribution of a newly designed 

thermo-brachytherapy seed for treatment of solid tumors in induction heating, 

Parsai, E., Gautam, B., Shvydka, D., Feldmeier, J.J. 

International Journal of Radiation Oncology, Biology, Physics 81, 2011. p. S150. 

7. Finding the Optimal Thickness of Large Area Thin-Film CdTe Detector Under 

Diagnostic X-Ray Beams, 

X. Jin, D. Shvydka, E. Parsai, 


8. Investigation of the Effect of the Gold-Tissue Interface On the Radiation Dose 

Enhancement Due to Gold Nanoparticles, 

N. Paudel, D. Shvydka, E. Parsai, 


9. Advantages of Implementation of a Self-Regulating Thermobrachy Seed for Solid 

Tumors, 

B Gautam, D Shvydka, J Feldmeier, M Subramanian, E Parsai, 


10. A Novel Device for Delivering Combined Partial Breast Hyperthermia and Partial 

Breast Irradiation, 

T. White, D. Shvydka, E. Parsai, 


11. Thin Film CdTe Photovoltaic Detector Performance under Diagnostic X-Ray Beams, 

X. Jin, I. Parsai, and D. Shvydka, 


12. Three-Dimentional Dosimetric and Thermal Properties of a Newly Developed 

Ferromagnetic Core Thermobrachytherapy Seed for Treatment of Solid Tumors, 

B. Gautam, D. Shvydka, E. Parsai, and J. Feldmeier, 


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13. Understanding and mitigating effects of nonuniformities on reliability of thin film 

photovoltaics, 

Karpov V. G., Diana Shvydka, 

Proceedings of SPIE 7412, Reliability of Photovoltaic Cells, Modules, 

Components, and Systems II, Editors N.G. Dhere; J. H. Wohlgemuth; D. T. 

Ton, 2009, p.74120L - 74120L-15. 

14. Monte Carlo Simulation of Thin-Film CdTe Detector Performance for Diagnostic 

Imaging Applications, 

X. Jin, E.I Parsai, D.Shvydka, J. Kang, 

Medical Physics 36, 2009, p. 2462. 

15. Investigating Thermal Properties of a Thermobrachytherapy Radioactive Seed for 

Concurrent Brachytherapy and Hyperthermia Treatments: Design Considerations 

D.Shvydka, B. Gautam, E.I Parsai, J. Feldmeier, 


16. Investigating Radiation Properties of a New Radioactive Seed for Concurrent 

Brachytherapy and Hyperthermia Treatments: A Monte Carlo Study, 

N. Khan, E.I Parsai, J. Feldmeier, D.Shvydka, 


17. Theoretical Analysis of a New Generation Portal Imaging Sensor Based On Thin-Film 

CdTe: A Feasibility Study For Clinical High Energy X-Ray Detection, 

Kang, J., Parsai, E.I. , Shvydka, D. 


18. Patient Scatter Analysis for A New Generation of Portal Imaging Sensors Based On 

Thin-Film Cadmium Telluride, 

Shvydka, D., Parsai, E.I., Kang, J., D. Pearson, J. J. Feldmeier, 


19. A New Generation of Electronic Portal Imaging Devices (EPID) Using Thin-Film 

CdTe for Radiation Oncology Applications, 

Diana Shvydka, E. Parsai, J. Kang, D. Pearson 


20. Pressure dependence of photovoltaic parameters in thin film Cu(In,Ga)Se2 solar cells, 

Diana Shvydka, J. Drayton1, M. Mitra, S.X. Marsillac, F. Jacob, 

Proceedings of IEEE 4th World Conference on Photovoltaic Energy Conversion, 

Waikoloa, Hawaii May 7-12, 2006 (IEEE, Piscataway, NJ 2006), p.465. 

21. Piezo-photovoltaic coupling in thin-film CdS/CdTe solar cells, 

Jennifer Drayton, M. Mitra, and Diana Shvydka, 


Waikoloa, Hawaii May 7-12, 2006 (IEEE, Piscataway, NJ 2006). 

22. Propagating Electric Impulses in Thin Film PV, 

T. K. Wilson, Diana Shvydka and V. G. Karpov, 


Waikoloa, Hawaii May 7-12, 2006 (IEEE, Piscataway, NJ 2006). 

23. Understanding the Physics of CdS-based PV: Band Diagram, Interfaces, and 

Nonuniformities, 

V. G. Karpov, Diana Shvydka, J. Drayton, M. L. C. Cooray, and A. D. Compaan, 

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DOE Solar Energy Technologies Program Review Meeting, November 7-10, Denver, 

Colorado, DOE/GO-1020006-2245, March (2006). 

24. Spatial and Temporal Variations in Electronic Transport Through a CdTe-Based 

Schottky Barrier, 

Diana Shvydka, V. Parikh, V.G. Karpov and A.D. Compaan, 

MRS Symposium Proceedings 865, p. F12.2, San Francisco, March 28-April 1 2005. 

25. Physics of CdTe Photovoltaics: From Front to Back, 

V.G. Karpov, Diana Shvydka, and Yann Roussillon, 

MRS Symposium Proceedings 865, edited by W. Shafarman, T. Gessert, S. Niki, S. 

Siebentritt, p. F10.1, San Francisco, March 28-April 1 2005. 

26. Lateral Nonuniformity and Mesoscale Effects in Giant Area Electronics, 

V. G. Karpov, Diana Shvydka, and Yann Roussillon, 

MRS Symposium Proceedings 870E, edited by M. S. Shur, P. Wilson, M. Stutzmann, 

p. H2.2, San Francisco, March 28-April 1 2005. 

27. Modeling of nonuniformity losses in integrated large area solar cell modules, 


Proceedings of 31st IEEE Photovoltaic Specialists Conference, Coronado Springs, 

January 3-7, 2005, pp 359-362. 

28. Physical modes of thin-film PV degradation, 

V. G. Karpov, Diana Shvydka, and Yann Roussillon, 


January 3-7, 2005, pp. 437-440. 

29. Back contact effects in thin-film photovoltaics, 

Y. Roussillon, V. G. Karpov, Diana Shvydka, J. Drayton, and A. D. Compaan, 


January 3-7, 2005, pp 441-444. 

30. Reach-through mechanism in CdS/CdTe solar cell, 

Y. Roussillon, V. G. Karpov, Diana Shvydka, A. D. Compaan, and D. M. Giolando, 


January 3-7, 2005, pp 340-343. 

31. Photoluminescence fatigue in CdTe photovoltaics, 

Diana Shvydka, C. Verzella and V. G. Karpov 

MRS Symposium Proceedings 763, p. B5.7, San Francisco, April 21-25 2003. 

32. The mesoscale physics of large-area photovoltaics, 

V. G. Karpov, Diana Shvydka,Yann Roussillon, and A. D. Compaan, 

Proceedings of 3 d World Conference on Photovoltaic Energy Conversion, Osaka, 

Japan, May 11-18, 2003. 

33. External bias effect on junction photoluminescence in CdS/CdTe solar cells, 

Diana Shvydka, A.D. Compaan, V.G. Karpov, 

Proceedings of 29 th IEEE Photovoltaic Specialists Conference, New Orleans, May 

18-23, 2002, pp. 712-715. 

34. Micrononuniformity effects in thin-film photovoltaics, 



18-23, 2002, pp. 708-711. 

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35. Capacitance - frequency analysis of CdTe photovoltaics, 

Diana Shvydka, U. Jayamaha, V. G. Karpov, 


18-23, 2002, pp. 752-755. 

36. Photoluminescence of CdTe:Cu and CdS:Cu, 

K.J. Price, D.Grecu, Diana Shvydka and A.D. Compaan, 

Proceedings of 28 th IEEE Photovoltaic Specialists Conference, Anchorage, 

September 15-22, 2000, p. 658. 

37. Rapid optimization of CdTe1-xSx absorber films and PV devices by means of the 

combinatorial method, 

J.J. Hanak, E. Bykov, H. Elgamel, D. Grecu, J. Putz, D. Shvydka, 

Proceedings of 28 th IEEE Photovoltaic Specialists Conference, Anchorage, 

September 15-22, 2000, p. 495. 

38. Absorption and photoluminescence studies of lightly alloyed CdTe(S) and CdS(Te), 

Diana Shvydka, K.J. Price, A.D. Compaan, 

MRS Symposium Proceedings 668, p.H6.2.1, San Francisco, April 16-20 2001. 

Patents: 

1. Method for photovoltaic healing of non-uniformities in semiconductor devices, 

V. G. Karpov, Y. Roussillon, Diana Shvydka, A. D. Compaan, D. M. Giolando, 

Patent filed 1/13/2005, Ser.# 11/035,170. 

2. Corrosion Resistant Electrodes and Corrosion Resistant Protective Tunneling Layers, 

V.G. Karpov, Diana Shvydka, and T. Kahle, utility patent pending. 

3. SHUNT: self-healing universal nonuniformity treatment, 

V.G. Karpov and Diana Shvydka, PCT patent filed. 

4. System for high energy gamma ray detection, 

E. Ishmael Parsai, Diana Shvydka, June Kang, provisional patent filed. 

5. Nanodipole photovoltaics, 

Diana Shvydka and V.G. Karpov, PCT patent filed. 

Conferences and Professional Meetings (no published manuscript): 

1. Piezo-effect in CdS-based solar cells, 

Diana Shvydka, Jennifer Drayton, Mukut Mitra, 

Proceedings of the 19th National CdTe R&D Meeting, Editors: H. S. Ullal. P. V. 

Meyers, and C. Ferekides, Golden, Colorado, March 9-10 (2006). 

2. Indicative facts and device model, 

V. G. Karpov, Diana Shvydka, J. Drayton, L. Cooray, and A. D. Compaan, 



3. Back contact and nonuniformity, 

V. G. Karpov, Diana Shvydka, J. Drayton, Y. Roussillon, and A. D. Compaan, 



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4. Piezo-effect in CdS/CdTe solar cells, 

Diana Shvydka, J.Drayton, V. G. Karpov and A.D. Compaan, 

National CdTe R&D Team Meeting; Golden, CO; May 5-6, 2005. 

5. Modeling of non-uniformity losses in integrated large-area modules, 


National CdTe R&D Team Meeting; Perrysburg, OH; February 26-27, 2004. 

6. Thermography Mapping and Modeling, 

Diana Shvydka, J.P. Rakotoniaina and O. Breitenstein, 

National CdTe R&D Team Meeting; FSEC, Golden, CO; July 10-11, 2003. 

7. Photoluminescence Mapping, 


National CdTe R&D Team Meeting; FSEC, Golden, CO; July 10-11, 2003. 

8. Low Light Diagnostics in Thin-Film Photovoltaics, 

Diana Shvydka, V.G Karpov, A.D. Compaan, 

APS March meeting, Austin, TX, March 3-7, 2003 

9. Low-light diagnostics 


National CdTe R&D Team Meeting; FSEC, Golden, CO; November 28-29, 2002. 

10. Capacitance spectroscopy of defect states in thin film CdTe/CdS junction, 

Diana Shvydka, U. Jayamaha, V. G. Karpov and A. D. Compaan, 

APS March meeting, Indianapolis, IN, March 18-22 2002. 

11. Field-dependent photoluminescence from thin-film CdTe/CdS junction, 


APS March meeting, Indianapolis, IN, March 18-22 2002. 

12. Characterization of Micrononuniformities by Photoluminescence Mapping, 

Diana Shvydka, A. D. Compaan, A.Gupta and V. G. Karpov, 

National CdTe R&D Team Meeting; FSEC, Cocoa, FL; March 14-15, 2002. 

13. Capacitance Spectroscopy of Defect States, 

Diana Shvydka, U. Jayamaha and V. G. Karpov, 

National CdTe R&D Team Meeting; FSEC, Cocoa, FL; March 14-15, 2002. 

14. Bias-dependent luminescence in CdS/CdTe cells, 

A. D. Compaan, Diana Shvydka, K.J. Price, A. Vasko, V.G. Karpov, 

NCPV meeting, October 2001. 

15. Nonlocal optical response in CdTe photovoltaics, 


NCPV meeting, October 2001. 

16. Experimental study of absorption edge in CdSxTe1-x films, 

Diana Shvydka, K.B. Makhratchev, I. Matulionis, A. D. Compaan 

APS March meeting, Atlanta, March 1999. 

12

Diana Shvydka, Ph.D - The University of Toledo

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